Harvey Tool 73050-C3 Square End Mill 3/64 in 4 Flute Altin

Product Description

The HARVEY TOOL 73050-C3 is a solid carbide square end mill designed for precision milling in tight tolerances and small-feature work. It runs a 0.050-inch cutting diameter with a 0.15-inch length of cut, making it well suited for micro-scale slotting, profiling, and pocketing operations. The 4-flute geometry with a 30-degree helix angle promotes efficient chip evacuation and stable tool engagement. An AlTiN coating adds heat resistance and extends tool life in harder workpiece materials. The 1/8-inch shank fits standard collets and tool holders common in CNC machining centers and manual mills.

This end mill is intended for use on CNC machining centers, high-speed mills, and toolroom equipment where small-diameter cutting tools are required. It suits work in steel, stainless steel, cast iron, and high-temp alloys where the AlTiN coating provides thermal protection. The centercutting design allows plunge entry, giving the operator flexibility for ramping and helical interpolation in die, mold, and precision component work. Right-hand cut and right-hand flute orientation are standard for conventional spindle direction.

Key Features

• 0.050-inch cutting diameter for micro-feature and small-slot applications
• AlTiN coating for high heat resistance and extended tool life in hard materials
• 4-flute spiral geometry with 30-degree helix angle for smooth chip flow
• Centercutting capable — supports plunge, ramp, and helical entry
• Right-hand cut, right-hand flute for standard spindle operation
• Solid carbide construction for rigidity and wear resistance

Compatibility

Designed as an OEM-style replacement solid carbide square end mill for use in 1/8-inch collets and tool holders on CNC machining centers and manual mills requiring 3/64-inch diameter square-end cutting tools.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or powered-down state before inserting or removing tooling. Seat the 1/8-inch shank fully into the collet and torque the nut to the collet manufacturer specification. At this diameter, tool runout is critical — check TIR with a dial indicator before cutting to prevent premature breakage.